X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=refs.c;h=a9b8c72c6b6ea017f36639f01c997275299b16ad;hb=fd547a972ad1ad714e1dac0a9ffc7637a64dd9b2;hp=4d6fad8879561ec86a5f37c06f129a19ae5c2f7d;hpb=240897e908e48e8f8c8d5555522afe255b3b734b;p=git.git

diff --git a/refs.c b/refs.c
index 4d6fad887..a9b8c72c6 100644
--- a/refs.c
+++ b/refs.c
@@ -309,49 +309,6 @@ const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *
 	return ref;
 }
 
-int create_symref(const char *ref_target, const char *refs_heads_master)
-{
-	const char *lockpath;
-	char ref[1000];
-	int fd, len, written;
-	const char *git_HEAD = git_path("%s", ref_target);
-
-#ifndef NO_SYMLINK_HEAD
-	if (prefer_symlink_refs) {
-		unlink(git_HEAD);
-		if (!symlink(refs_heads_master, git_HEAD))
-			return 0;
-		fprintf(stderr, "no symlink - falling back to symbolic ref\n");
-	}
-#endif
-
-	len = snprintf(ref, sizeof(ref), "ref: %s\n", refs_heads_master);
-	if (sizeof(ref) <= len) {
-		error("refname too long: %s", refs_heads_master);
-		return -1;
-	}
-	lockpath = mkpath("%s.lock", git_HEAD);
-	fd = open(lockpath, O_CREAT | O_EXCL | O_WRONLY, 0666);	
-	written = write_in_full(fd, ref, len);
-	close(fd);
-	if (written != len) {
-		unlink(lockpath);
-		error("Unable to write to %s", lockpath);
-		return -2;
-	}
-	if (rename(lockpath, git_HEAD) < 0) {
-		unlink(lockpath);
-		error("Unable to create %s", git_HEAD);
-		return -3;
-	}
-	if (adjust_shared_perm(git_HEAD)) {
-		unlink(lockpath);
-		error("Unable to fix permissions on %s", lockpath);
-		return -4;
-	}
-	return 0;
-}
-
 int read_ref(const char *ref, unsigned char *sha1)
 {
 	if (resolve_ref(ref, sha1, 1, NULL))
@@ -676,7 +633,7 @@ static struct ref_lock *lock_ref_sha1_basic(const char *ref, const unsigned char
 	lock->lk = xcalloc(1, sizeof(struct lock_file));
 
 	lock->ref_name = xstrdup(ref);
-	lock->log_file = xstrdup(git_path("logs/%s", ref));
+	lock->orig_ref_name = xstrdup(orig_ref);
 	ref_file = git_path("%s", ref);
 	lock->force_write = lstat(ref_file, &st) && errno == ENOENT;
 
@@ -706,6 +663,8 @@ struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1)
 
 struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1)
 {
+	if (check_ref_format(ref) == -1)
+		return NULL;
 	return lock_ref_sha1_basic(ref, old_sha1, NULL);
 }
 
@@ -772,10 +731,10 @@ int delete_ref(const char *refname, unsigned char *sha1)
 	 */
 	ret |= repack_without_ref(refname);
 
-	err = unlink(lock->log_file);
+	err = unlink(git_path("logs/%s", lock->ref_name));
 	if (err && errno != ENOENT)
 		fprintf(stderr, "warning: unlink(%s) failed: %s",
-			lock->log_file, strerror(errno));
+			git_path("logs/%s", lock->ref_name), strerror(errno));
 	invalidate_cached_refs();
 	unlock_ref(lock);
 	return ret;
@@ -837,7 +796,12 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
 
  retry:
 	if (log && rename(git_path("tmp-renamed-log"), git_path("logs/%s", newref))) {
-		if (errno==EISDIR) {
+		if (errno==EISDIR || errno==ENOTDIR) {
+			/*
+			 * rename(a, b) when b is an existing
+			 * directory ought to result in ISDIR, but
+			 * Solaris 5.8 gives ENOTDIR.  Sheesh.
+			 */
 			if (remove_empty_directories(git_path("logs/%s", newref))) {
 				error("Directory not empty: logs/%s", newref);
 				goto rollback;
@@ -911,68 +875,81 @@ void unlock_ref(struct ref_lock *lock)
 			rollback_lock_file(lock->lk);
 	}
 	free(lock->ref_name);
-	free(lock->log_file);
+	free(lock->orig_ref_name);
 	free(lock);
 }
 
-static int log_ref_write(struct ref_lock *lock,
-	const unsigned char *sha1, const char *msg)
+static int log_ref_write(const char *ref_name, const unsigned char *old_sha1,
+			 const unsigned char *new_sha1, const char *msg)
 {
 	int logfd, written, oflags = O_APPEND | O_WRONLY;
 	unsigned maxlen, len;
-	char *logrec;
+	int msglen;
+	char *log_file, *logrec;
 	const char *committer;
 
+	if (log_all_ref_updates < 0)
+		log_all_ref_updates = !is_bare_repository();
+
+	log_file = git_path("logs/%s", ref_name);
+
 	if (log_all_ref_updates &&
-	    (!strncmp(lock->ref_name, "refs/heads/", 11) ||
-	     !strncmp(lock->ref_name, "refs/remotes/", 13))) {
-		if (safe_create_leading_directories(lock->log_file) < 0)
+	    (!strncmp(ref_name, "refs/heads/", 11) ||
+	     !strncmp(ref_name, "refs/remotes/", 13) ||
+	     !strcmp(ref_name, "HEAD"))) {
+		if (safe_create_leading_directories(log_file) < 0)
 			return error("unable to create directory for %s",
-				lock->log_file);
+				     log_file);
 		oflags |= O_CREAT;
 	}
 
-	logfd = open(lock->log_file, oflags, 0666);
+	logfd = open(log_file, oflags, 0666);
 	if (logfd < 0) {
 		if (!(oflags & O_CREAT) && errno == ENOENT)
 			return 0;
 
 		if ((oflags & O_CREAT) && errno == EISDIR) {
-			if (remove_empty_directories(lock->log_file)) {
+			if (remove_empty_directories(log_file)) {
 				return error("There are still logs under '%s'",
-					     lock->log_file);
+					     log_file);
 			}
-			logfd = open(lock->log_file, oflags, 0666);
+			logfd = open(log_file, oflags, 0666);
 		}
 
 		if (logfd < 0)
 			return error("Unable to append to %s: %s",
-				     lock->log_file, strerror(errno));
+				     log_file, strerror(errno));
 	}
 
-	committer = git_committer_info(1);
+	msglen = 0;
 	if (msg) {
-		maxlen = strlen(committer) + strlen(msg) + 2*40 + 5;
-		logrec = xmalloc(maxlen);
-		len = snprintf(logrec, maxlen, "%s %s %s\t%s\n",
-			sha1_to_hex(lock->old_sha1),
-			sha1_to_hex(sha1),
-			committer,
-			msg);
-	}
-	else {
-		maxlen = strlen(committer) + 2*40 + 4;
-		logrec = xmalloc(maxlen);
-		len = snprintf(logrec, maxlen, "%s %s %s\n",
-			sha1_to_hex(lock->old_sha1),
-			sha1_to_hex(sha1),
-			committer);
+		/* clean up the message and make sure it is a single line */
+		for ( ; *msg; msg++)
+			if (!isspace(*msg))
+				break;
+		if (*msg) {
+			const char *ep = strchr(msg, '\n');
+			if (ep)
+				msglen = ep - msg;
+			else
+				msglen = strlen(msg);
+		}
 	}
+
+	committer = git_committer_info(-1);
+	maxlen = strlen(committer) + msglen + 100;
+	logrec = xmalloc(maxlen);
+	len = sprintf(logrec, "%s %s %s\n",
+		      sha1_to_hex(old_sha1),
+		      sha1_to_hex(new_sha1),
+		      committer);
+	if (msglen)
+		len += sprintf(logrec + len - 1, "\t%.*s\n", msglen, msg) - 1;
 	written = len <= maxlen ? write_in_full(logfd, logrec, len) : -1;
 	free(logrec);
 	close(logfd);
 	if (written != len)
-		return error("Unable to append to %s", lock->log_file);
+		return error("Unable to append to %s", log_file);
 	return 0;
 }
 
@@ -995,7 +972,9 @@ int write_ref_sha1(struct ref_lock *lock,
 		return -1;
 	}
 	invalidate_cached_refs();
-	if (log_ref_write(lock, sha1, logmsg) < 0) {
+	if (log_ref_write(lock->ref_name, lock->old_sha1, sha1, logmsg) < 0 ||
+	    (strcmp(lock->ref_name, lock->orig_ref_name) &&
+	     log_ref_write(lock->orig_ref_name, lock->old_sha1, sha1, logmsg) < 0)) {
 		unlock_ref(lock);
 		return -1;
 	}
@@ -1009,7 +988,85 @@ int write_ref_sha1(struct ref_lock *lock,
 	return 0;
 }
 
-int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1)
+int create_symref(const char *ref_target, const char *refs_heads_master,
+		  const char *logmsg)
+{
+	const char *lockpath;
+	char ref[1000];
+	int fd, len, written;
+	char *git_HEAD = xstrdup(git_path("%s", ref_target));
+	unsigned char old_sha1[20], new_sha1[20];
+
+	if (logmsg && read_ref(ref_target, old_sha1))
+		hashclr(old_sha1);
+
+	if (safe_create_leading_directories(git_HEAD) < 0)
+		return error("unable to create directory for %s", git_HEAD);
+
+#ifndef NO_SYMLINK_HEAD
+	if (prefer_symlink_refs) {
+		unlink(git_HEAD);
+		if (!symlink(refs_heads_master, git_HEAD))
+			goto done;
+		fprintf(stderr, "no symlink - falling back to symbolic ref\n");
+	}
+#endif
+
+	len = snprintf(ref, sizeof(ref), "ref: %s\n", refs_heads_master);
+	if (sizeof(ref) <= len) {
+		error("refname too long: %s", refs_heads_master);
+		goto error_free_return;
+	}
+	lockpath = mkpath("%s.lock", git_HEAD);
+	fd = open(lockpath, O_CREAT | O_EXCL | O_WRONLY, 0666);
+	if (fd < 0) {
+		error("Unable to open %s for writing", lockpath);
+		goto error_free_return;
+	}
+	written = write_in_full(fd, ref, len);
+	close(fd);
+	if (written != len) {
+		error("Unable to write to %s", lockpath);
+		goto error_unlink_return;
+	}
+	if (rename(lockpath, git_HEAD) < 0) {
+		error("Unable to create %s", git_HEAD);
+		goto error_unlink_return;
+	}
+	if (adjust_shared_perm(git_HEAD)) {
+		error("Unable to fix permissions on %s", lockpath);
+	error_unlink_return:
+		unlink(lockpath);
+	error_free_return:
+		free(git_HEAD);
+		return -1;
+	}
+
+#ifndef NO_SYMLINK_HEAD
+	done:
+#endif
+	if (logmsg && !read_ref(refs_heads_master, new_sha1))
+		log_ref_write(ref_target, old_sha1, new_sha1, logmsg);
+
+	free(git_HEAD);
+	return 0;
+}
+
+static char *ref_msg(const char *line, const char *endp)
+{
+	const char *ep;
+	char *msg;
+
+	line += 82;
+	for (ep = line; ep < endp && *ep != '\n'; ep++)
+		;
+	msg = xmalloc(ep - line + 1);
+	memcpy(msg, line, ep - line);
+	msg[ep - line] = 0;
+	return msg;
+}
+
+int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1, char **msg, unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
 {
 	const char *logfile, *logdata, *logend, *rec, *lastgt, *lastrec;
 	char *tz_c;
@@ -1017,6 +1074,7 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *
 	struct stat st;
 	unsigned long date;
 	unsigned char logged_sha1[20];
+	void *log_mapped;
 
 	logfile = git_path("logs/%s", ref);
 	logfd = open(logfile, O_RDONLY, 0);
@@ -1025,7 +1083,8 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *
 	fstat(logfd, &st);
 	if (!st.st_size)
 		die("Log %s is empty.", logfile);
-	logdata = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, logfd, 0);
+	log_mapped = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, logfd, 0);
+	logdata = log_mapped;
 	close(logfd);
 
 	lastrec = NULL;
@@ -1044,13 +1103,21 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *
 			die("Log %s is corrupt.", logfile);
 		date = strtoul(lastgt + 1, &tz_c, 10);
 		if (date <= at_time || cnt == 0) {
+			tz = strtoul(tz_c, NULL, 10);
+			if (msg)
+				*msg = ref_msg(rec, logend);
+			if (cutoff_time)
+				*cutoff_time = date;
+			if (cutoff_tz)
+				*cutoff_tz = tz;
+			if (cutoff_cnt)
+				*cutoff_cnt = reccnt - 1;
 			if (lastrec) {
 				if (get_sha1_hex(lastrec, logged_sha1))
 					die("Log %s is corrupt.", logfile);
 				if (get_sha1_hex(rec + 41, sha1))
 					die("Log %s is corrupt.", logfile);
 				if (hashcmp(logged_sha1, sha1)) {
-					tz = strtoul(tz_c, NULL, 10);
 					fprintf(stderr,
 						"warning: Log %s has gap after %s.\n",
 						logfile, show_rfc2822_date(date, tz));
@@ -1064,13 +1131,12 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *
 				if (get_sha1_hex(rec + 41, logged_sha1))
 					die("Log %s is corrupt.", logfile);
 				if (hashcmp(logged_sha1, sha1)) {
-					tz = strtoul(tz_c, NULL, 10);
 					fprintf(stderr,
 						"warning: Log %s unexpectedly ended on %s.\n",
 						logfile, show_rfc2822_date(date, tz));
 				}
 			}
-			munmap((void*)logdata, st.st_size);
+			munmap(log_mapped, st.st_size);
 			return 0;
 		}
 		lastrec = rec;
@@ -1087,38 +1153,112 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *
 	tz = strtoul(tz_c, NULL, 10);
 	if (get_sha1_hex(logdata, sha1))
 		die("Log %s is corrupt.", logfile);
-	munmap((void*)logdata, st.st_size);
-	if (at_time)
-		fprintf(stderr, "warning: Log %s only goes back to %s.\n",
-			logfile, show_rfc2822_date(date, tz));
-	else
-		fprintf(stderr, "warning: Log %s only has %d entries.\n",
-			logfile, reccnt);
-	return 0;
+	if (msg)
+		*msg = ref_msg(logdata, logend);
+	munmap(log_mapped, st.st_size);
+
+	if (cutoff_time)
+		*cutoff_time = date;
+	if (cutoff_tz)
+		*cutoff_tz = tz;
+	if (cutoff_cnt)
+		*cutoff_cnt = reccnt;
+	return 1;
 }
 
-void for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data)
+int for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data)
 {
 	const char *logfile;
 	FILE *logfp;
 	char buf[1024];
+	int ret = 0;
 
 	logfile = git_path("logs/%s", ref);
 	logfp = fopen(logfile, "r");
 	if (!logfp)
-		return;
+		return -1;
 	while (fgets(buf, sizeof(buf), logfp)) {
 		unsigned char osha1[20], nsha1[20];
-		int len;
+		char *email_end, *message;
+		unsigned long timestamp;
+		int len, tz;
 
 		/* old SP new SP name <email> SP time TAB msg LF */
 		len = strlen(buf);
 		if (len < 83 || buf[len-1] != '\n' ||
 		    get_sha1_hex(buf, osha1) || buf[40] != ' ' ||
-		    get_sha1_hex(buf + 41, nsha1) || buf[81] != ' ')
+		    get_sha1_hex(buf + 41, nsha1) || buf[81] != ' ' ||
+		    !(email_end = strchr(buf + 82, '>')) ||
+		    email_end[1] != ' ' ||
+		    !(timestamp = strtoul(email_end + 2, &message, 10)) ||
+		    !message || message[0] != ' ' ||
+		    (message[1] != '+' && message[1] != '-') ||
+		    !isdigit(message[2]) || !isdigit(message[3]) ||
+		    !isdigit(message[4]) || !isdigit(message[5]))
 			continue; /* corrupt? */
-		fn(osha1, nsha1, buf+82, cb_data);
+		email_end[1] = '\0';
+		tz = strtol(message + 1, NULL, 10);
+		if (message[6] != '\t')
+			message += 6;
+		else
+			message += 7;
+		ret = fn(osha1, nsha1, buf+82, timestamp, tz, message, cb_data);
+		if (ret)
+			break;
 	}
 	fclose(logfp);
+	return ret;
 }
 
+static int do_for_each_reflog(const char *base, each_ref_fn fn, void *cb_data)
+{
+	DIR *dir = opendir(git_path("logs/%s", base));
+	int retval = 0;
+
+	if (dir) {
+		struct dirent *de;
+		int baselen = strlen(base);
+		char *log = xmalloc(baselen + 257);
+
+		memcpy(log, base, baselen);
+		if (baselen && base[baselen-1] != '/')
+			log[baselen++] = '/';
+
+		while ((de = readdir(dir)) != NULL) {
+			struct stat st;
+			int namelen;
+
+			if (de->d_name[0] == '.')
+				continue;
+			namelen = strlen(de->d_name);
+			if (namelen > 255)
+				continue;
+			if (has_extension(de->d_name, ".lock"))
+				continue;
+			memcpy(log + baselen, de->d_name, namelen+1);
+			if (stat(git_path("logs/%s", log), &st) < 0)
+				continue;
+			if (S_ISDIR(st.st_mode)) {
+				retval = do_for_each_reflog(log, fn, cb_data);
+			} else {
+				unsigned char sha1[20];
+				if (!resolve_ref(log, sha1, 0, NULL))
+					retval = error("bad ref for %s", log);
+				else
+					retval = fn(log, sha1, 0, cb_data);
+			}
+			if (retval)
+				break;
+		}
+		free(log);
+		closedir(dir);
+	}
+	else if (*base)
+		return errno;
+	return retval;
+}
+
+int for_each_reflog(each_ref_fn fn, void *cb_data)
+{
+	return do_for_each_reflog("", fn, cb_data);
+}